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Tag: "atom" at biology news

Genetically engineered blood protein can be used to split water into oxygen and hydrogen

...their natural state in the blood they have an iron atom at their centre. The scientists modified the porphyrin molecule to swap the iron for a zinc atom in the middle, which completely changed the chemistry and characteristics of the molecule. This m...

One-of-a-kind imaging probe reveals secrets useful for drug discovery

...er samples, allowing scientists to study molecules atom by atom. But what made this particular method unique is not the extreme power of the magnet, which at 600 megahertz is fairly standard, but the extreme sensitivity of the probe - the component that is inserted into the magnet to obtain chemical info...

Walking molecule now carries packages

...sists of three fused benzene rings with one oxygen atom on each side. An organic compound, anthraquinone is widely used in the pulp industry for turning cellulose from wood into paper. It is also the parent substance of a large class of dyes and pigments. Its chemical formula is C14H8O2. The UCR study u...

Chemical switch triggers critical cell activities

...n two biological molecules that form when a sulfur atom on one of the molecules binds to an atom that is part of the other molecule. Understanding how the thioester bond switch works is importa...

Researchers create artificial enzyme that mimics the body's internal engine

...enzyme: an organic molecule called phenol, an iron atom and a copper atom. Working together, these three centers provide the four electrons necessary to transform oxygen into water. "How all four electrons are added to oxygen has always been mysterious," Collman said. "Very few people study it. It's quite...

New biofuels process promises to meet all US transportation needs

...mplish the complete transformation of every carbon atom in the feedstock to liquid fuel by supplementing the conversion process with hydrogen from a carbon-free energy source," Agrawal said. Other researchers have estimated that the United States has a sustainable supply of about 1.4 billion tons of bi...

Simulations unravel outer membrane transport mechanism

...ta about the position and characteristics of every atom in the system, the researchers ran simulations of various scenarios to test which hypotheses were most feasible. Their work relied on detailed crystallographic studies of the molecules provided by University of Virginia researcher Michael C. Wiener. ...

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